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Why does one need to study about soil and what is its importance?
You would be aware that, from the dawn of agriculture, cultivators were attracted to fertile soils of river valleys. Early Greek and Roman writers have described farming systems that involved leguminous plants, use of ashes and sulphur as soil su pplements. German chemist Justus von Liebig (1840) found that crop yields were increased by adding minerals to soils. He proposed that the mineral elements in the soil added as manures and fertilizers are essential for plant growth. According to him certain factors are essential for plant growth and if any one of these factors is limiting (controlling) plant production would be reduced. Soils are studied today to ascertain which of these factors is below desired level and how its limitation to plant growt h can be removed.
Question 1: "Plant tissue culture now has direct commercial applications" Explain. Describe plant tissue culture Illustrate importance of plant tissue culture Sho
In what way does overgrazing lead to soil erosion?
In interspecific sterility, the failure in mating occurs because of inability of the sperm to reach the egg in animals and the pollen to reach ovules in plants. In plailts interspe
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What is the difference between facultative anaerobic beings and obligate anaerobic beings? Facultative anaerobic beings, such as the fungi Saccharomyces cerevisiae, a brewing y
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What are the situations in which the environment can change the genotype of an individual? What is the condition for this type of change to be transmitted to the offspring? The
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